Orange-red and saturated red thermally activated delayed fluorescent dendrimers for non-doped solution-processed OLEDs

Yuting He; Deyun Zhou; Cheng Zhang; Hao Yan; Yongshuai Chai

doi:10.1016/j.dyepig.2022.110385

Orange-red and saturated red thermally activated delayed fluorescent dendrimers for non-doped solution-processed OLEDs

Yuting He, Deyun Zhou, Cheng Zhang, Hao Yan, Yongshuai Chai

School of Electronics and Information

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Two thermally activated delayed ﬂuorescence (TADF) dendritic emitters with orange-red and saturated red emission, respectively, were obtained by coupled diphenylamine-carbazole dendron groups as donor with di(pyridin-3-yl)methanone as accepter. The two TADF dendrimers of tBuDPACz-DPyM and MeODPACz-DPyM exhibited small energy gaps between the singlet and triplet excited states (0.04 vs 0.03 eV). As a consequence, the tBuDPACz-DPyM non-doped solution-processed organic light-emitting devices (OLED) exhibited high current eﬃciency of 2.36 cd A⁻¹ and external quantum efficiency of 1.82% with low turn-on voltage 3.4 V as well as a lower eﬃciency roll-oﬀ. Moreover, Commission Internationale de L'Éclairage (CIE) coordinates of two OLED devices were (0.56, 0.43) and (0.62, 0.37) for tBuDPACz-DPyM and MeODPACz-DPyM respectively.

Original language	English
Article number	110385
Journal	Dyes and Pigments
Volume	203
DOIs	https://doi.org/10.1016/j.dyepig.2022.110385
State	Published - Jul 2022

Keywords

Non-doped solution-processed
Orange-red and saturated red
Organic light-emitting diode
Thermally activated delayed fluorescence

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10.1016/j.dyepig.2022.110385

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title = "Orange-red and saturated red thermally activated delayed fluorescent dendrimers for non-doped solution-processed OLEDs",

abstract = "Two thermally activated delayed ﬂuorescence (TADF) dendritic emitters with orange-red and saturated red emission, respectively, were obtained by coupled diphenylamine-carbazole dendron groups as donor with di(pyridin-3-yl)methanone as accepter. The two TADF dendrimers of tBuDPACz-DPyM and MeODPACz-DPyM exhibited small energy gaps between the singlet and triplet excited states (0.04 vs 0.03 eV). As a consequence, the tBuDPACz-DPyM non-doped solution-processed organic light-emitting devices (OLED) exhibited high current eﬃciency of 2.36 cd A−1 and external quantum efficiency of 1.82% with low turn-on voltage 3.4 V as well as a lower eﬃciency roll-oﬀ. Moreover, Commission Internationale de L'{\'E}clairage (CIE) coordinates of two OLED devices were (0.56, 0.43) and (0.62, 0.37) for tBuDPACz-DPyM and MeODPACz-DPyM respectively.",

keywords = "Non-doped solution-processed, Orange-red and saturated red, Organic light-emitting diode, Thermally activated delayed fluorescence",

author = "Yuting He and Deyun Zhou and Cheng Zhang and Hao Yan and Yongshuai Chai",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = jul,

doi = "10.1016/j.dyepig.2022.110385",

language = "英语",

volume = "203",

journal = "Dyes and Pigments",

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TY - JOUR

T1 - Orange-red and saturated red thermally activated delayed fluorescent dendrimers for non-doped solution-processed OLEDs

AU - He, Yuting

AU - Zhou, Deyun

AU - Zhang, Cheng

AU - Yan, Hao

AU - Chai, Yongshuai

PY - 2022/7

Y1 - 2022/7

N2 - Two thermally activated delayed ﬂuorescence (TADF) dendritic emitters with orange-red and saturated red emission, respectively, were obtained by coupled diphenylamine-carbazole dendron groups as donor with di(pyridin-3-yl)methanone as accepter. The two TADF dendrimers of tBuDPACz-DPyM and MeODPACz-DPyM exhibited small energy gaps between the singlet and triplet excited states (0.04 vs 0.03 eV). As a consequence, the tBuDPACz-DPyM non-doped solution-processed organic light-emitting devices (OLED) exhibited high current eﬃciency of 2.36 cd A−1 and external quantum efficiency of 1.82% with low turn-on voltage 3.4 V as well as a lower eﬃciency roll-oﬀ. Moreover, Commission Internationale de L'Éclairage (CIE) coordinates of two OLED devices were (0.56, 0.43) and (0.62, 0.37) for tBuDPACz-DPyM and MeODPACz-DPyM respectively.

AB - Two thermally activated delayed ﬂuorescence (TADF) dendritic emitters with orange-red and saturated red emission, respectively, were obtained by coupled diphenylamine-carbazole dendron groups as donor with di(pyridin-3-yl)methanone as accepter. The two TADF dendrimers of tBuDPACz-DPyM and MeODPACz-DPyM exhibited small energy gaps between the singlet and triplet excited states (0.04 vs 0.03 eV). As a consequence, the tBuDPACz-DPyM non-doped solution-processed organic light-emitting devices (OLED) exhibited high current eﬃciency of 2.36 cd A−1 and external quantum efficiency of 1.82% with low turn-on voltage 3.4 V as well as a lower eﬃciency roll-oﬀ. Moreover, Commission Internationale de L'Éclairage (CIE) coordinates of two OLED devices were (0.56, 0.43) and (0.62, 0.37) for tBuDPACz-DPyM and MeODPACz-DPyM respectively.

KW - Non-doped solution-processed

KW - Orange-red and saturated red

KW - Organic light-emitting diode

KW - Thermally activated delayed fluorescence

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U2 - 10.1016/j.dyepig.2022.110385

DO - 10.1016/j.dyepig.2022.110385

M3 - 文章

AN - SCOPUS:85129700239

SN - 0143-7208

VL - 203

JO - Dyes and Pigments

JF - Dyes and Pigments

M1 - 110385

ER -

Orange-red and saturated red thermally activated delayed fluorescent dendrimers for non-doped solution-processed OLEDs

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